Adjustable die holder



Jan. 21, 1936. w. H. ROE

' ADJUSTABLE DIE HOLDER Filed Sept.

' 1 LJLML liRoe Qtturnrgs.

Patented Jan. 21, 1936 UNITED: STATES ADJUSTABLE DIE HOLDER Walter H. Roe, Tiffin, Ohio, assignor to The National Machinery Company, Tifiin, Ohio Application September 5, 1933, Serial No. 688,214

6 Claims.

This invention relates to means for adjustably mounting a die holder in a forging machine; head-- er, or other metal working machine.

It is an object of the invention to provide a die holder having means whereby it can be adjusted in one or more directions in a common plane, the adjustment in one direction being effected Without disturbing the adjustment in another di-' rection. For example,in a heading machine it is possible to adjust the holder vertically and/or horizontally in order to aline the die with the work, each adjustment being capable of accompli'shment independently of the other adjustment.

With the foregoingvand other objects in view which will appear as the description proceeds, the invention consists of certain novel details of.con-. struction and combinations of parts hereinafter more fullydescribed and pointed out in the claims, itjbeing understoodthat changes may be made in' the construction and arrangement of parts without departing from the spirit of the inven.-. tion as claimed.

In the accompanying drawing the preferred forms of the invention have been shown.

In said drawing: I

Figure l is a front elevation of a portion of a heading slide'having the present improvements applied thereto, theclamping screws being in section and the supporting plates being broken away.

Figure '2' is a side elevation of the structure shown in Figure l, the slide being in section and broken away.

Figure 3 is an enlarged central longitudinal section through one of the adjusting wedges and its head, the supporting pin being shown in elevation.

Figure 4 is a view similar to Figure 3 showing a modified construction.

Figure 5 is a. section on line 55, Figure 3.

In the foregoing illustrations the invention has been shown applied to the slide S of a heading or forging machine but it is to be understood that r the improvements could be applied to the bottom surface of a ram or other slide used in forging machines of the vertical type. In fact the improvements can be utilized wherever it is desirable to mount a .die for minute adjustment relative to the blank to be acted upon.

In the structure illustrated there is shown a die holder in the form of a base plate I carrying a die 2 securely held thereby. The sides of plate I are formed with arcuate recesses. 3 near the upper and lower ends respectively and. along the Wall of each of these recesses there is formed a rib 4.

Extending into each end of plate I is a pair of bores 5, the bores-of each pair diverginginto the plate from the adjacent end and'being'partly intersected by one of the recesses 3. The outer end of each bore is counterbored as at 6.

'Slidably mounted in each of the bores 5 is an adjusting wedge I formed by cutting away one end portion of a cylindrical member to produce a'fiat inclined face 8 terminating in a transverse shoulder 9. A pin I is seated in the large end of the wedge and can be fastened in place by a transverse pin II. The supporting pin It] can be in theform of a screw with an end enlargement or head I2. between the wedge and a screw head I3 which is provided with an angular recess I4.

Each screw head engages the threaded wall. of one of the counterbores 6 and the several bores are disposed at such. angles relative to the fiat faces 8 of the wedges that when these Wedges are seated in the bores 5 their faces 8 will be parallel with the vertical center line of plate I.

Suitably anchored in the upper end of plate I is a supporting stud I5 having a screw threaded portion I6 extending through slots II""providedin upper and lower plates I8 and I9. Supporting lugs on the slide S project between these plates. Upper and lower adjusting nuts ZI andZZlare mounted on the stud and serveto bind. upon.

plates I8 and I9 and clamp them on the lugs 20.

The plate I is held to the heading slide or ram S by clamping screws 23 extending within recesses 3 and having nuts 24 adapted to bear upon the ribs 4. Normally the fiat faces of the wedges I bear outwardly against these screws as shown in Figure 1.

When it is desired to adjust the plate the nuts 24 are loosened and nut 22 can also be loosened. By then unscrewing the heads I3 of the wedges in one side of plate I, those wedges will be withdrawn from contact with the adjacent screws 23. The other wedges I can then be adjusted inwardly by screwing the heads I3 into the counterbores Ii. This will cause said wedges to tighten the plate between the screws and at the same time adjust the plate laterally a distance equal to the space previously provided by the partial withdrawal of two of the wedges. Obviously with this means of adjustment a very minute change of position in a. lateral direction can be efiected. Thereafter the nuts can be tightened to hold the plate securely.

It will be noted that at all times during the It constitutes a swivel connection.

lateral adjustment of the plate the faces 8 of the wedges at the two sides of the plate remain par allel. Thus by adjusting the nuts 2! and 22 the plate I can be raised or lowered without disturbing the lateral adjustment previously obtained.

Instead of providing the wedges with recessed heads mounted on separate swivel pins as in Figure 3, the modified structure in Figure 4 might be used. In that form of device each wedge 25 has an integral stem 26 projecting from the large end thereof and a screw threaded head 21 with an angular end portion or nut 28 at one end thereof, is mounted for rotation on this stem. The end of the stem can be upset or otherwise enlarged as at 29 to hold the parts together. With this form of structure the nut portion 28 can be gripped between the jaws of a wrench while being adjusted instead of requiring the use of a special tool for insertion into socket l4.

Although the adjustable die holder has been shown and described mounted on a movable slide, ram or other backing element, it is to be understood that under some conditions it could be supported by a stationary backing element.

What is claimed is:

1. In a metal working machine a backing element, a die holder thereon, means normally spaced from the holder for fastening it to said element, wedges adjustably mounted within the holder and each having an obliquely disposed surface for contact with one of the fastening means, the obliquely disposed portions of the wedges being constantly parallel with the center line of the holder, and means for adjusting the holder in the direction of said center line.

2. In a metal working machine a die holder having recesses, there being bores extending into the holder along diverging lines and intersecting the recesses, wedges adjustably mounted within the bores and having obliquely disposed faces exposed within the recesses, the faces of the wedges being parallel, and fastening means within the recesses and engaged by the oblique faces of the wedges.

3. In a metal working machine a die holder having opposed recesses, there being bores extending into the holder along diverging lines and intersecting the respective recesses, relatively fixed fastening means within the recesses and normally spaced from the holder, wedges within the respective bores each having an oblique face, the faces of opposed wedges being parallel, and,

means for adjusting the wedges longitudinally of their bores to position their oblique faces in contact with and between said fastening means.

4. In a metal working machine a die holder having opposed recesses, there being bores extending into the holder along diverging lines and intersecting the respective recesses, relatively fixed fastening means within the recesses and normally spaced from the holder, wedges within the respective bores each having an oblique face, the faces of opposed wedges being parallel, means for adjusting the wedges longitudinally of their bores to position their oblique faces in contact with and between said fastening means, and means for adjusting the holder along lines parallel with said oblique faces.

5. In a metal working machine a backing element, a die holder thereon having opposed recesses, there being bores extending into the holder along diverging lines and intersecting the respective recesses, fastening means extending from said element within the recesses and normally spaced from the holder, diverging wedges within the respective bores each having an oblique face parallel with the corresponding face of the other wedge, means for adjusting the wedges longitudinally of their diverging bores to move said oblique faces out of and into contact with the fastening means to adjust the holder laterally, and cooperating means on said element and holder for adjusting the holder along lines parallel with the oblique faces of the wedges and without disturbing the lateral adjustment of the holder.

6. In a metal working machine a backing element, a die holder slidable in any direction thereon, means for securing the die holder to the backing element in any position to which it may be slid, opposed diverging wedges carried by the holder and each having an obliquely disposed face, said faces being parallel and in sliding engagement with the securing means, means for adjusting one of the wedges obliquely relative to the holder toretract the wedge from the engaged securing means, means for adjusting the other wedge obliquely relative to the holder to advance said wedge against the securing means engaged thereby, thus to shift the holder laterally relative to the securing means, and means for shifting the holder and wedges relative to the, engaged securing means and along lines parallel with said oblique faces.

WALTER H. ROE. 

